| Constant | Symbol | Value | Uncertainty |
|---|---|---|---|
| Newtonian constant of gravitation | G | 6.6742(10)x10-11 Nm2/kg2 | 150 ppm |
| Planck constant | h | 6.626 0693(11)x10-34 Js | 170 ppb |
| Avogadro constant | NA | 6.022 1415(10)x1023 /mole | 170 ppb |
| elementary charge | e | 1.602 176 53(14)x10-19 C | 85 ppb |
| unified atomic mass unit | u | 1.660 538 86(28)x10-27 kg | 170 ppb |
| Constant | Symbol | Value | Uncertainty | Budget | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| speed of light in vacuum | c | 299 792 458 m/s | exact definition | 0 | |||||||||||||||
| def. of second | s | 9 192 631 770 Cs 6s periods | exact definition | 0 | |||||||||||||||
| electric constant | 0 | 8.854 187 817 ...x10-12 F/m | exact definition | 0 | |||||||||||||||
| Carbon mass in amu | mC | 12 | exact definition | 0 | |||||||||||||||
| Rydberg constant | R | 10 973 371.568 525(73) /m | 6.6 ppt | 3.3 ppt | |||||||||||||||
| proton-electron mass ratio | mp/me | 1836.152 672 61(85) | 460 ppt | 230 ppt | |||||||||||||||
| cesium-nucleon mass ratio | MCs | 132.905 451 931(27) u | 200 ppt | 100 ppt | |||||||||||||||
| proton mass in amu | mp | 1.007 276 466 88(13) u | 130 ppt | <65? ppt | |||||||||||||||
| Planck/Cs mass ratio | h/MCs | 3.002 369 45(33)x10-9 m2/s | 3000? ppt | 1500? ppt
| recoil frequency
| frec | 1875.785 54(15) Hz | 3000? ppt | 1500? ppt
| recoil velocity
| vrec | 0.003 356 129 08(27)> m/s | 3000? ppt | 1500? ppt
| Cs 6s->62P½ frequency
| Csf(D1) | 335 116 048 807(41) kHz | 120 ppt |
| |
Here are the gory details.
| Source | Magnitude |
|---|---|
| Statistical (fit+Doppler) (1 beam) | 2 kHz |
| Statistical (fit+Doppler) (2 beam) | 2 kHz |
| Optical Pumping + Recoil shift (1 beam) | 3±1 kHz |
| Optical Pumping + Recoil shift (2 beam) | 2±1 kHz |
| Corner Cube (unrotated) | 5 kHz |
| Corner Cube (rotated--new) | 1 kHz |
| Zeeman effect | 1 kHz |
| AC Stark shift | <0.1 kHz |
| 2nd order Doppler | <0.01 kHz |
For Optical pumping and recoil shift this is the correction expected by extrapolating to zero laser intensity. It will have a corresponding uncertainty perhaps as shown above.